diff --git a/src/demo.shy b/src/demo.shy
new file mode 100644
index 00000000..816f0502
--- /dev/null
+++ b/src/demo.shy
@@ -0,0 +1,17 @@
+# demo script
+
+let a = 1+2*3+1-0
+
+func show {
+	if a > 2 {
+		system pwd
+	}
+	system pwd
+}
+show
+
+for a > 2 {
+	system pwd
+	let a = a - 1
+}
+show